Enhanced magnetoelastic performance in Pr/Mn-doped Laves phase (Tb,Ho)Fe2 compounds

• Autorzy: Wang M. K. , Liu J. J. , Lv X. J. , Ding Q. L. , Li F. , Pan Z. B. , Xia W. X. , Du J.

Identyfikatory

DOI

10.2478/msp-2020-0084

• Języki publikacji: EN

Abstrakty

EN

Magnetostrictive Tb_xHo_0.8−xPr_0.2Fe_1.8Mn_0.1 (0 ⩽ x ⩽ 0.20) alloys are prepared by arc-melting and subsequent annealing. The dopant of Pr/Mn introduced into RFe₂ compounds effectively stabilizes the forming of single C15 Laves phase at ambient pressure. The easy magnetization direction (EMD) varies when Tb content increases, which is accompanied by a crystalstructural transition. EMD lies along ‹1 0 0› axis for x ⩽ 0.05, rotating to ‹1 1 1› axis for x ⩽ 0.12, with a tetragonal symmetry changing to a rhombohedral one. Magnetocrystalline-anisotropy compensation is obtained with the optimized composition of x = 0.12, shifting to the Tb-poor side in comparison to Pr/Mn-free counterpart. An enhanced effect on magnetoelastic properties is achieved in Tb_0.12Ho_0.68Pr_0.2Fe_1.8Mn_0.1, which simultaneously possesses a low anisotropy and high magnetostriction performance, i.e. λ_s ~ 420 ppm, λ₁₁₁ ~ 970 ppm, and a large low-field λa ~ 390 ppm/2 kOe, being 30 % higher than that of Pr/Mn-free compound. Combining low-cost light rare earth Pr with the lower Tb content, Tb_0.12Ho_0.68Pr_0.2Fe_1.8Mn_0.1may make it promising solution in magnetostrictive applications.

Słowa kluczowe

EN

intermetallics; magnetostriction; magnetic properties; Laves phase; X-ray technique

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2020
• Tom: Vol. 38, No. 4
• Strony: 707--714
• Opis fizyczny: Bibliogr. 26 poz., rys.

Twórcy

autor

Wang M. K.

• Faculty of Materials Science & Chemical Engineering, Ningbo University, Ningbo 315211, China
• Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China

autor

Liu J. J.

• Faculty of Materials Science & Chemical Engineering, Ningbo University, Ningbo 315211, China

autor

Lv X. J.

• Faculty of Materials Science & Chemical Engineering, Ningbo University, Ningbo 315211, China

autor

Ding Q. L.

• Faculty of Materials Science & Chemical Engineering, Ningbo University, Ningbo 315211, China

autor

Li F.

• Faculty of Materials Science & Chemical Engineering, Ningbo University, Ningbo 315211, China

autor

Pan Z. B.

• Faculty of Materials Science & Chemical Engineering, Ningbo University, Ningbo 315211, China

autor

Xia W. X.

• Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China

autor

Du J.

• Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China

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